360 black door film

I'm replacing a door on my project 360, using a 340 donor. Does anyone know
where to get the black tape/vinyl stuff thats sticks to 2 middle bits of the
door window frame?

I thought at first this was paint, but it appears to be tape, or sticky back
plastic of some form. Obviously glue quality and suitability are important
as the normal decorative stuff wouldn't be car grade, or the write finish.

--
Tony